US4344451A - Pressure responsive distributing valve device - Google Patents

Pressure responsive distributing valve device Download PDF

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Publication number
US4344451A
US4344451A US06/169,555 US16955580A US4344451A US 4344451 A US4344451 A US 4344451A US 16955580 A US16955580 A US 16955580A US 4344451 A US4344451 A US 4344451A
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US
United States
Prior art keywords
pressure
port
user
valve
accumulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/169,555
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English (en)
Inventor
Ludwig Budecker
Bernd Schutt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITT Inc
Original Assignee
ITT Industries Inc
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Filing date
Publication date
Application filed by ITT Industries Inc filed Critical ITT Industries Inc
Application granted granted Critical
Publication of US4344451A publication Critical patent/US4344451A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/027—Installations or systems with accumulators having accumulator charging devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/148—Arrangements for pressure supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2514—Self-proportioning flow systems
    • Y10T137/2521—Flow comparison or differential response
    • Y10T137/2524—Flow dividers [e.g., reversely acting controls]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2635—Pilot valve operated

Definitions

  • the present invention relates to a valve device having a pressure port connected to a pump; a first user port which is in communication with a pressure accumulator and a first user component and connectible with the pressure port through a throttle and a check valve; a second user port which is connectible with the pressure port through a by-pass valve, the by-pass valve having a by-pass piston whose effective surface adapted to be subjected to pressure in the opening direction connects with the pressure port and whose effective surface adapted to be subjected to pressure in the closing direction and extending into a control chamber connects with the pressure port through a throttle and an accumulator-pressure-responsive pilot valve when the accumulator pressure is below a predetermined limit, and connects with a return line when the accumulator pressure has reached the predetermined limit; and a third user port to which a third user component is connected with hold positions between two limit positions, the third user port being connectible with the pressure port through a line adapted to be shut off by a control valve whose valve passageway is open
  • valve device of this type is fully disclosed in the copending application of L. Budecker, Ser. No. 060,946, filed July 26, 1979, whose disclosure is incorporated herein by reference.
  • a feature of the present invention is the provision of a valve device comprising: a pressure port connected to a pump; a first user port in communication with a pressure accumulator and a first user component, the first user port being connectible to the pressure port through a conduit having a throttle and a first check valve disposed therein; a second user port in communication with a second user component and connectible with the pressure port through a by-pass valve including a by-pass piston having a first effective surface adjacent the pressure port adapted to be subjected to pressure at the pressure port in the opening direction of the by-pass valve and a second effective surface spaced from the first effective surface adapted to be subjected to pressure from the pressure port in the closing direction of the by-pass valve, the second effective surface being disposed in a control chamber, the control chamber being connected to the pressure port through the throttle and an accumulator-pressure-responsive pilot valve when the pressure of the accumulator is below a predetermined limit and to a return line when the pressure of the accumulator reaches the predetermined limit;
  • the improved valve device results in an improvement in the supply of energy to the third user component without drawing upon reserves which must be kept available for the second user component, for example, the brake system in an automotive vehicle.
  • another check valve is provided which opens laterally into the channel on account of the pressure from the pump to which this additional check valve is connected by a channel.
  • FIG. 1 is a cross sectional view of a first embodiment of a valve device in accordance with the principles of the present invention
  • FIG. 2 is a cross sectional view of a second embodiment of a valve device in accordance with the principles of the present invention.
  • FIG. 3 is a cross sectional view of a third embodiment of a valve device in accordance with the principles of the present invention.
  • FIGS. 1, 2 and 3 are assigned the same reference numerals.
  • the valve device has a pressure port 1, a first user port 2, a second user port 3, a third user port 4 and a port 5 leading to a discharge reservoir 9.
  • a fluid pump 6 Connected to pressure port 1 is a fluid pump 6, to first user port 2 a first user component 8 (not shown), for example a vehicle hydraulic brake system, to second user port 3 a conduit leading to a power-assisted device, for example, the vehicle steering system, and to the third user port 4 a vehicle antiskid control system.
  • a pressure accumulator 7 which is permanently connected with the pressurized chamber of control member 22 of a control valve 18 via a check valve 20.
  • Check valve 20 opens as a result of the pressure from a conduit 19 which among others leads to fluid pump 6.
  • Check valve 20 permits at all times free flow of fluid from pressure accumulator 7 through first user port 2 to first user component 8.
  • control valve 18 will open valve 19 to permit delivery of fluid from fluid pump 6 through channel 17 and conduit 19 into pressure accumulator 7 to service the first user component.
  • the valve device disclosed in the above-cited copending application comprises a control valve which is connected to the pressure accumulator via the first user port. From the conduit charging the pressure accumulator with fluid, there branches off another conduit leading to a control valve.
  • This control valve comprisees an operating piston which is axially slidably arranged in a cylindrical bore and divides it into a first and a second chamber.
  • the operating piston is designed as a hollow piston having a bore with a throttle and bears against a compression spring in its cylindrical bore permitting the operating piston to be connected to, or disconnected from, the pump via the pressure-accumulator-charging conduit on account of the pressures acting on its end surfaces.
  • a check valve 33 is substituted for the complicated operating piston of the valve device of the above-cited copending application and, as shown in FIGS. 1, 2 and 3, it is inserted into the bore 35 such that it will open under the action of pressure in port 2 connected to first user component 8 if the third user component connected to port 4 opens and the pressure previously prevailing in bore 35 decreases.
  • fluid will flow from pressure accumulator 7 through check valve 20 which is invariably open in the appropriate direction, through pressure port 2, the new check valve 33 and bore 35, to user port 4 and, thus, to the third user component.
  • a check valve 31 is provided which is connected to pump 6 through channels 30 and 17, and which is opened by the pump pressure when the pressure in bore 35 drops and control valve 18 is in the position "charge accumulator", enabling fluid to be supplied to the third user component directly through bore 35.
  • FIG. 3 The same arrangement is shown in FIG. 3.
  • the valve device illustrated in FIG. 3 differs from the one of FIG. 2 only in that the newly introduced check valve 33 and check valve 31 are combined to form a self-contained unit to facilitate the assembly of the hydraulic elements.
  • a filter 56 is inserted upstream from the third user component which is, for example, the vehicle antiskid control system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Multiple-Way Valves (AREA)
  • Servomotors (AREA)
US06/169,555 1979-09-06 1980-07-17 Pressure responsive distributing valve device Expired - Lifetime US4344451A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792935949 DE2935949A1 (de) 1979-09-06 1979-09-06 Ventileinrichtung
DE2935949 1979-09-06

Publications (1)

Publication Number Publication Date
US4344451A true US4344451A (en) 1982-08-17

Family

ID=6080153

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/169,555 Expired - Lifetime US4344451A (en) 1979-09-06 1980-07-17 Pressure responsive distributing valve device

Country Status (8)

Country Link
US (1) US4344451A (es)
JP (1) JPS5639305A (es)
DE (1) DE2935949A1 (es)
ES (1) ES494503A0 (es)
FR (1) FR2465108A2 (es)
GB (1) GB2058226B (es)
IT (1) IT1132655B (es)
SE (1) SE443613B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844114A (en) * 1987-12-18 1989-07-04 Contractor Tool And Equipment Textron Inc. Pressure-drop sensor valve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101922A1 (de) * 1981-01-22 1982-08-19 Alfred Teves Gmbh, 6000 Frankfurt Speicherladeventil fuer zwei arbeitskreise
DE3613689A1 (de) * 1986-04-23 1987-11-05 Hydraulik Zubehoer Ges Fuer Sicherheitsvorrichtung zum verbinden einer druckmittelquelle mit einem verbraucher
DE3627264C2 (de) * 1986-08-12 1996-08-22 Teves Gmbh Alfred Hydraulische Kraftfahrzeug-Bremsanlage
SE504290C2 (sv) * 1995-07-17 1996-12-23 Scania Cv Ab Ventilarrangemang för fordon

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014360A (en) * 1972-05-31 1977-03-29 Trw Inc. Plural-service hydraulic system
US4084604A (en) * 1976-09-13 1978-04-18 Itt Industries, Incorporated Pressure responsive distributing valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249094B (es) * 1967-08-31
US3575192A (en) * 1969-01-27 1971-04-20 Bendix Corp Vehicle hydraulic system and pressure regulator therefor
FR2136857B1 (es) * 1971-05-07 1974-04-05 Dba
SE371259B (es) * 1972-10-05 1974-11-11 Tico Ab
DE2824059C2 (de) * 1973-05-12 1986-11-13 Bodenseewerk Gerätetechnik GmbH, 7770 Überlingen Regelvorrichtung für die Endphasenlenkung von Geschossen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014360A (en) * 1972-05-31 1977-03-29 Trw Inc. Plural-service hydraulic system
US4084604A (en) * 1976-09-13 1978-04-18 Itt Industries, Incorporated Pressure responsive distributing valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844114A (en) * 1987-12-18 1989-07-04 Contractor Tool And Equipment Textron Inc. Pressure-drop sensor valve

Also Published As

Publication number Publication date
FR2465108A2 (fr) 1981-03-20
DE2935949A1 (de) 1981-03-26
GB2058226A (en) 1981-04-08
SE443613B (sv) 1986-03-03
IT1132655B (it) 1986-07-02
FR2465108B2 (es) 1984-03-02
ES8105072A2 (es) 1981-04-01
GB2058226B (en) 1983-05-05
IT8024464A0 (it) 1980-09-05
JPS5639305A (en) 1981-04-15
SE8006016L (sv) 1981-03-07
ES494503A0 (es) 1981-04-01

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